/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2007 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * This is the integration file for JavaScript.
 *
 * It defines the FCKeditor class that can be used to create editor
 * instances in a HTML page in the client side. For server side
 * operations, use the specific integration system.
 */

// FCKeditor Class
var FCKeditor = function( instanceName, width, height, toolbarSet, value )
{
  // Properties
  this.InstanceName = instanceName ;
  this.Width      = width     || '100%' ;
  this.Height     = height    || '400' ;
  this.ToolbarSet   = toolbarSet  || 'Default' ;
  this.Value      = value     || '' ;
  this.BasePath   = '/fckeditor/' ;
  this.CheckBrowser = true ;
  this.DisplayErrors  = true ;
  this.EnableSafari = false ;   // This is a temporary property, while Safari support is under development.
  this.EnableOpera  = false ;   // This is a temporary property, while Opera support is under development.

  this.Config     = new Object() ;

  // Events
  this.OnError    = null ;  // function( source, errorNumber, errorDescription )
}

FCKeditor.prototype.Version     = '2.4.2' ;
FCKeditor.prototype.VersionBuild  = '14978' ;

FCKeditor.prototype.Create = function()
{
  document.write( this.CreateHtml() ) ;
}

FCKeditor.prototype.CreateHtml = function()
{
  // Check for errors
  if ( !this.InstanceName || this.InstanceName.length == 0 )
  {
    this._ThrowError( 701, 'You must specify an instance name.' ) ;
    return '' ;
  }

  var sHtml = '<div>' ;

  if ( !this.CheckBrowser || this._IsCompatibleBrowser() )
  {
    sHtml += '<input type="hidden" id="' + this.InstanceName + '" name="' + this.InstanceName + '" value="' + this._HTMLEncode( this.Value ) + '" style="display:none" />' ;
    sHtml += this._GetConfigHtml() ;
    sHtml += this._GetIFrameHtml() ;
  }
  else
  {
    var sWidth  = this.Width.toString().indexOf('%')  > 0 ? this.Width  : this.Width  + 'px' ;
    var sHeight = this.Height.toString().indexOf('%') > 0 ? this.Height : this.Height + 'px' ;
    sHtml += '<textarea name="' + this.InstanceName + '" rows="4" cols="40" style="width:' + sWidth + ';height:' + sHeight + '">' + this._HTMLEncode( this.Value ) + '<\/textarea>' ;
  }

  sHtml += '</div>' ;

  return sHtml ;
}

FCKeditor.prototype.ReplaceTextarea = function()
{
  if ( !this.CheckBrowser || this._IsCompatibleBrowser() )
  {
    // We must check the elements firstly using the Id and then the name.
    var oTextarea = document.getElementById( this.InstanceName ) ;
    var colElementsByName = document.getElementsByName( this.InstanceName ) ;
    var i = 0;
    while ( oTextarea || i == 0 )
    {
      if ( oTextarea && oTextarea.tagName.toLowerCase() == 'textarea' )
        break ;
      oTextarea = colElementsByName[i++] ;
    }

    if ( !oTextarea )
    {
      alert( 'Error: The TEXTAREA with id or name set to "' + this.InstanceName + '" was not found' ) ;
      return ;
    }

    oTextarea.style.display = 'none' ;
    this._InsertHtmlBefore( this._GetConfigHtml(), oTextarea ) ;
    this._InsertHtmlBefore( this._GetIFrameHtml(), oTextarea ) ;
  }
}

FCKeditor.prototype._InsertHtmlBefore = function( html, element )
{
  if ( element.insertAdjacentHTML ) // IE
    element.insertAdjacentHTML( 'beforeBegin', html ) ;
  else                // Gecko
  {
    var oRange = document.createRange() ;
    oRange.setStartBefore( element ) ;
    var oFragment = oRange.createContextualFragment( html );
    element.parentNode.insertBefore( oFragment, element ) ;
  }
}

FCKeditor.prototype._GetConfigHtml = function()
{
  var sConfig = '' ;
  for ( var o in this.Config )
  {
    if ( sConfig.length > 0 ) sConfig += '&amp;' ;
    sConfig += encodeURIComponent( o ) + '=' + encodeURIComponent( this.Config[o] ) ;
  }

  return '<input type="hidden" id="' + this.InstanceName + '___Config" value="' + sConfig + '" style="display:none" />' ;
}

FCKeditor.prototype._GetIFrameHtml = function()
{
  var sFile = 'fckeditor.html' ;

  try
  {
    if ( (/fcksource=true/i).test( window.top.location.search ) )
      sFile = 'fckeditor.original.html' ;
  }
  catch (e) { /* Ignore it. Much probably we are inside a FRAME where the "top" is in another domain (security error). */ }

  var sLink = this.BasePath + 'editor/' + sFile + '?InstanceName=' + encodeURIComponent( this.InstanceName ) ;
  if (this.ToolbarSet) sLink += '&amp;Toolbar=' + this.ToolbarSet ;

  return '<iframe id="' + this.InstanceName + '___Frame" src="' + sLink + '" width="' + this.Width + '" height="' + this.Height + '" frameborder="0" scrolling="no"></iframe>' ;
}

FCKeditor.prototype._IsCompatibleBrowser = function()
{
  return FCKeditor_IsCompatibleBrowser( this.EnableSafari, this.EnableOpera ) ;
}

FCKeditor.prototype._ThrowError = function( errorNumber, errorDescription )
{
  this.ErrorNumber    = errorNumber ;
  this.ErrorDescription = errorDescription ;

  if ( this.DisplayErrors )
  {
    document.write( '<div style="COLOR: #ff0000">' ) ;
    document.write( '[ FCKeditor Error ' + this.ErrorNumber + ': ' + this.ErrorDescription + ' ]' ) ;
    document.write( '</div>' ) ;
  }

  if ( typeof( this.OnError ) == 'function' )
    this.OnError( this, errorNumber, errorDescription ) ;
}

FCKeditor.prototype._HTMLEncode = function( text )
{
  if ( typeof( text ) != "string" )
    text = text.toString() ;

  text = text.replace(
    /&/g, "&amp;").replace(
    /"/g, "&quot;").replace(
    /</g, "&lt;").replace(
    />/g, "&gt;") ;

  return text ;
}

function FCKeditor_IsCompatibleBrowser( enableSafari, enableOpera )
{
  var sAgent = navigator.userAgent.toLowerCase() ;

  // Internet Explorer
  if ( sAgent.indexOf("msie") != -1 && sAgent.indexOf("mac") == -1 && sAgent.indexOf("opera") == -1 )
  {
    var sBrowserVersion = navigator.appVersion.match(/MSIE (.\..)/)[1] ;
    return ( sBrowserVersion >= 5.5 ) ;
  }

  // Gecko (Opera 9 tries to behave like Gecko at this point).
  if ( navigator.product == "Gecko" && navigator.productSub >= 20030210 && !( typeof(opera) == 'object' && opera.postError ) )
    return true ;

  // Opera
  if ( enableOpera && navigator.appName == 'Opera' && parseInt( navigator.appVersion, 10 ) >= 9 )
      return true ;

  // Safari
  if ( enableSafari && sAgent.indexOf( 'safari' ) != -1 )
    return ( sAgent.match( /safari\/(\d+)/ )[1] >= 312 ) ;  // Build must be at least 312 (1.3)

  return false ;
}